{ "agent_meta": { "type": "agent_product", "schema": "mcc_agent", "schema_version": "1.1", "generated_at": "2026-11-07", "source_of_truth": "MCC Commerce Engine" }, "request_context": { "language": { "id_lang": 1, "iso_code": "de", "url_prefix": "\/de\/" }, "delivery_country": { "id_country": 0, "iso_code": false }, "currency": { "id_currency": 1, "iso_code": "EUR", "name": "Euro", "symbol": "\u20ac" }, "complete": true }, "context_switching": { "available": true, "mode": "on_demand_resolver", "stateless": true, "resolver": "links.agent.contexts", "fetch_when": "requested_context_differs", "dimensions": [ "language", "delivery_country", "currency" ], "unspecified_dimensions": "preserve_request_context", "selection": { "match": "exact", "source": "available_contexts", "result": "available_contexts[].target_url" }, "target": { "resource": "product", "id_product": 104 }, "full_context_in_target_url": true, "requires_session_persistence": false, "manual_url_construction_allowed": false, "instruction": "When a requested language, delivery country or currency differs from request_context, fetch links.agent.contexts. Preserve dimensions not explicitly changed by the user, select the exact matching entry and follow target_url unchanged." }, "platform": { "name": "MCC Agentic Commerce", "version": "1.0", "commerce_engine": "MCC Commerce Engine", "agent_interface": "MCC Agentic API" }, "instructions": { "purpose": "This endpoint provides the complete machine-readable representation of one product in the active language, delivery-country and currency context.", "rules": [ "All prices, taxes, availability and actions in data.product apply only to request_context.", "When variants exist, select the matching entry from data.product.variant_offers and use its exact price, availability and action URL.", "Do not infer a variant price from the product-level price or from another variant.", "Use the exact action.url supplied by the selected offer. Do not construct add-to-cart URLs manually.", "When language, delivery country or currency must change, fetch links.agent.contexts and follow the exact matching target_url unchanged.", "Prices, taxes, inventory and availability are calculated by the shop.", "Do not invent unavailable product, variant, price, stock, shipping or checkout information." ] }, "capabilities": { "root": true, "sitemap": true, "search": true, "product": true, "contexts": true, "category": true, "cart": true, "cms_page": false, "checkout": false }, "links": { "self": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/product?id_product=104&setCountry=0&setCurrency=1", "agent": { "root": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/root?setCountry=0&setCurrency=1", "sitemap": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/sitemap?setCountry=0&setCurrency=1", "search": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/search?setCountry=0&setCurrency=1", "cart": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/cart?setCountry=0&setCurrency=1", "product": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/product?id_product=104&setCountry=0&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/contexts?resource=product&id_product=104&setCountry=0&setCurrency=1" }, "human": { "home": "https:\/\/musiccraft-instruments.com\/", "sitemap": "https:\/\/musiccraft-instruments.com\/de\/sitemap", "search": "https:\/\/musiccraft-instruments.com\/de\/suche", "product": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html", "cart": "https:\/\/musiccraft-instruments.com\/de\/bestellung", "contact": "https:\/\/musiccraft-instruments.com\/de\/kontaktiere-uns" } }, "commerce_model": { "pricing": "server_calculated", "tax": "server_calculated", "shipping": "server_calculated", "inventory": "live", "currencies": "context_based", "languages": "url_based" }, "data": { "product": { "@context": "https://schema.org", "@type": "Product", "@id": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html#product", "url": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/product?id_product=104&setCountry=0&setCurrency=1", "contexts": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/contexts?resource=product&id_product=104&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html" }, "id_product": 104, "name": "Wittner Kinnhalter zentriert f\u00fcr Violine \u2013 Balance, die man sp\u00fcrt", "description": "Der zentrierte Violin-Kinnhalter von Wittner bietet eine ausgewogene Spielposition, modernes Materialdesign und hohen Komfort f\u00fcr lange Sessions.", "full_description": "Eine gute Haltung entsteht nicht durch Nachdenken. Sondern dadurch, dass sich das Instrument einfach richtig anf\u00fchlt. Der zentrierte Kinnhalter f\u00fcr Violine von Wittner unterst\u00fctzt genau dieses Spielgef\u00fchl. Durch die mittige Position entsteht eine ausgewogene Balance zwischen Instrument und Spieler, wodurch Haltung und Bewegungsfreiheit nat\u00fcrlicher wirken k\u00f6nnen. Die leichte Bauweise und die hautfreundlichen Materialien sorgen f\u00fcr angenehmen Komfort \u2014 egal ob im Unterricht, bei langen Proben oder auf der B\u00fchne. Typisch Wittner steht dabei nicht das Zubeh\u00f6r im Mittelpunkt, sondern das ungest\u00f6rte Spielen. Weniger nachjustieren. Mehr Musik machen. \n \n Zentrierte Ausf\u00fchrung f\u00fcr Violine \n Ausgewogene und nat\u00fcrliche Spielposition \n Besonders leichtes Design \n Hautfreundliche Materialien \n Angenehmer Halt bei langen Sessions \n Qualit\u00e4t und Pr\u00e4zision von Wittner", "additional_text": "Wenn Technik verschwindet, bleibt mehr Raum f\u00fcr Musik.", "sku": "819\/600", "mpn": "819\/600", "ean13": "", "upc": "", "brand": { "@type": "Brand", "name": "Wittner \u2013 Division of GEWA music GmbH", "url": "https:\/\/musiccraft-instruments.com\/de\/wittner-division-of-gewa-music-gmbh_19" }, "manufacturer": { "@type": "Organization", "id_manufacturer": 19, "name": "Wittner \u2013 Division of GEWA music GmbH", "url": "https:\/\/musiccraft-instruments.com\/de\/wittner-division-of-gewa-music-gmbh_19" }, "supplier": { "@type": "Organization", "id_supplier": 1, "name": "Migma e.G." }, "main_category": { "id_category": 76, "name": "Kinnhalter", "link_rewrite": "kinnhalter", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/category?id_category=76&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/de\/kinnhalter-76" } }, "categories": [ { "id_category": 4, "name": "Instrumente", "link_rewrite": "instrumente", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/category?id_category=4&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/de\/instrumente-4" } }, { "id_category": 6, "name": "Equipment & Essentials", "link_rewrite": "equipment-essentials", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/category?id_category=6&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/de\/equipment-essentials-6" } }, { "id_category": 7, "name": "Restauration", "link_rewrite": "restauration", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/category?id_category=7&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/de\/restauration-7" } }, { "id_category": 5, "name": "Highlight", "link_rewrite": "highlight", "urls": { "agent": "https:\/\/musiccraft-instruments.com\/de\/mcc\/mcc_agent\/category?id_category=5&setCountry=0&setCurrency=1", "human": "https:\/\/musiccraft-instruments.com\/de\/highlight-5" } } ], "features": [ { "id_feature": 1, "id_feature_value": 150, "name": "Produkttyp", "value": "Ersatzteile" }, { "id_feature": 1, "id_feature_value": 1, "name": "Produkttyp", "value": "Zubeh\u00f6r" }, { "id_feature": 15, "id_feature_value": 130, "name": "Besteuerung", "value": "Standard Rate" }, { "id_feature": 9, "id_feature_value": 148, "name": "Instrument", "value": "Violine" }, { "id_feature": 28, "id_feature_value": 327, "name": "Bestandteile", "value": "Kinnhalter" }, { "id_feature": 29, "id_feature_value": 344, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "1\/16" }, { "id_feature": 29, "id_feature_value": 347, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "1\/8" }, { "id_feature": 29, "id_feature_value": 341, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "4\/4" }, { "id_feature": 29, "id_feature_value": 343, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "3\/4" }, { "id_feature": 29, "id_feature_value": 345, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "4\/4 bis 1\/16" }, { "id_feature": 29, "id_feature_value": 348, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "1\/2" }, { "id_feature": 29, "id_feature_value": 342, "name": "Gr\u00f6\u00dfe f\u00fcr", "value": "1\/4" }, { "id_feature": 2, "id_feature_value": 502, "name": "Besonderheit", "value": "Verschiedene Varianten" } ], "agent_faqs": [ ], "images": [ { "id_image": 2244, "cover": true, "position": 1, "legend": "Wittner Kinnhalter zentriert f\u00fcr Violine \u2013 Balance, die man sp\u00fcrt", "url": "https:\/\/cdn3.musiccraft-instruments.com\/2244-large_default\/wittner-kinnhalter-zentriert-violine.webp" }, { "id_image": 2245, "cover": false, "position": 2, "legend": "Wittner Kinnhalter zentriert f\u00fcr Violine \u2013 Balance, die man sp\u00fcrt", "url": "https:\/\/cdn3.musiccraft-instruments.com\/2245-large_default\/wittner-kinnhalter-zentriert-violine.webp" } ], "shipping_weight": { "@type": "QuantitativeValue", "value": 0.2, "unitCode": "KGM", "note": "Shipping weight, not product content." }, "variant_model": { "has_variants": true, "variant_count": 3, "default_id_product_attribute": 297 }, "offers": { "@type": "Offer", "offer_scope": "default_variant", "id_product": 104, "id_product_attribute": 297, "url": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html", "price": 34.90, "priceCurrency": "EUR", "availability": "https://schema.org/InStock", "itemCondition": "https://schema.org/NewCondition", "seller": { "@type": "Organization", "name": "musiccraft - instruments", "url": "https:\/\/musiccraft-instruments.com\/", "telephone": "+49 (0) 34 20 63 14 888" }, "priceSpecification": { "@type": "PriceSpecification", "price": 34.90, "priceCurrency": "EUR", "valueAddedTaxIncluded": true } }, "variant_offers": [ { "@type": "Offer", "id_product": 104, "id_product_attribute": 294, "is_default": false, "sku": "819\/600", "url": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html", "image": "https:\/\/cdn2.musiccraft-instruments.com\/1-large_default\/wittner-kinnhalter-zentriert-violine.webp", "attributes": [ { "group_id": 10, "group_name": "Gr\u00f6\u00dfe", "value": "4\/4 Gr\u00f6\u00dfe" } ], "attribute_summary": "Gr\u00f6\u00dfe: 4\/4 Gr\u00f6\u00dfe", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 29.33, "tax_included": 34.90, "without_reduction_tax_excluded": 29.33, "without_reduction_tax_included": 34.90, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "minimal_quantity": 1, "action": { "type": "add_to_cart", "method": "GET", "enabled": true, "quantity": 1, "url": "https:\/\/musiccraft-instruments.com\/de\/warenkorb?add=1&id_product=104&id_product_attribute=294&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 104, "id_product_attribute": 297, "is_default": true, "sku": "819\/601", "url": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html", "image": "https:\/\/cdn2.musiccraft-instruments.com\/1-large_default\/wittner-kinnhalter-zentriert-violine.webp", "attributes": [ { "group_id": 10, "group_name": "Gr\u00f6\u00dfe", "value": "3\/4 Gr\u00f6\u00dfe" } ], "attribute_summary": "Gr\u00f6\u00dfe: 3\/4 Gr\u00f6\u00dfe", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 29.33, "tax_included": 34.90, "without_reduction_tax_excluded": 29.33, "without_reduction_tax_included": 34.90, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "minimal_quantity": 1, "action": { "type": "add_to_cart", "method": "GET", "enabled": true, "quantity": 1, "url": "https:\/\/musiccraft-instruments.com\/de\/warenkorb?add=1&id_product=104&id_product_attribute=297&qty=1&setCountry=0&setCurrency=1" } }, { "@type": "Offer", "id_product": 104, "id_product_attribute": 295, "is_default": false, "sku": "819\/602", "url": "https:\/\/musiccraft-instruments.com\/de\/p\/wittner-kinnhalter-zentriert-violine-104.html", "image": "https:\/\/cdn2.musiccraft-instruments.com\/1-large_default\/wittner-kinnhalter-zentriert-violine.webp", "attributes": [ { "group_id": 10, "group_name": "Gr\u00f6\u00dfe", "value": "1\/4 + 1\/2 Gr\u00f6\u00dfe" } ], "attribute_summary": "Gr\u00f6\u00dfe: 1\/4 + 1\/2 Gr\u00f6\u00dfe", "price": { "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "tax_excluded": 29.33, "tax_included": 34.90, "without_reduction_tax_excluded": 29.33, "without_reduction_tax_included": 34.90, "value_added_tax_included": true }, "availability": "https://schema.org/InStock", "quantity": 5, "minimal_quantity": 1, "action": { "type": "add_to_cart", "method": "GET", "enabled": true, "quantity": 1, "url": "https:\/\/musiccraft-instruments.com\/de\/warenkorb?add=1&id_product=104&id_product_attribute=295&qty=1&setCountry=0&setCurrency=1" } } ], "pricing": { "scope": "default_variant", "default_id_product_attribute": 297, "delivery_country": false, "currency": "EUR", "currency_symbol": "\u20ac", "tax_rate": 19, "use_taxes": true, "show_taxes": true, "price_tax_included": 34.90, "price_tax_excluded": 29.33, "price_without_reduction": 29.33, "reduction_percent": 0, "reduction_price": 0 }, "availability": { "status": "https://schema.org/InStock", "orderable": true, "available_for_order": true, "show_price": true, "quantity": 15, "minimal_quantity": 1, "variant_stock_available": true, "allow_buy_when_out_of_stock": false, "stock_management": false, "is_virtual": false } }, "actions": { "add_to_cart": { "type": "cart_add", "method": "GET", "requires_context": true, "required_context_parameters": [ "setCountry", "setCurrency" ], "instruction": "Use the exact action.url from data.product.offers for a simple product or from the selected data.product.variant_offers entry. Respect action.enabled and action.quantity." } } } }